References:

• 1.       https://www.sokanu.com/careers/flight-attendant/how-to-become/
• 2.       http://www.thefreedictionary.com/flight+attendant
• 3.       http://www.careerflightpath.com/flight-attendant-requirements/
• 4.       http://flightimelimits.com/en/ftl-requirements/
• 5.       http://thinkprogress.org/economy/2015/02/14/3623267/qatar-airways-flight-attendants/